Why can't I find an accurate website for weather forecast in the United States of America? Miami is a nice city to go but I am afraid that weather will change our mood.

I am agree with you, the weather affect my mood too. Miami is a beautiful city for vacation and make a journey. I can share this website of weather forecast https://meteoprog.us/. It's good and accurate. It's important to look at weather forecast before travel. I use it for a while, I like to recommend it.